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题名: TESTS OF THE EINSTEIN EQUIVALENCE PRINCIPLE USING TeV BLAZARS
作者: Wei, Jun-Jie1; Wang, Jie-Shuang2; Gao, He3; Wu XueFeng(吴雪峰)1, 4
刊名: ASTROPHYSICAL JOURNAL LETTERS
出版日期: 2016-02-10
卷号: 818, 期号:1
关键词: BL Lacertae objects: general ; gravitation
DOI: 10.3847/2041-8205/818/1/L2
文章类型: Article
英文摘要: The observed time delays between different energy bands from TeV blazars provide a new, interesting way of testing the Einstein Equivalence Principle (EEP). If the whole time delay is assumed to be dominated by the gravitational field of the Milky Way, the conservative upper limit on the EEP can be estimated. Here, we show that the strict limits on the differences of the parameterized post-Newtonian parameter gamma values are gamma(Tev) - gamma(keV) < 3.86 x 10(-3) for Mrk 421 and gamma(TeV) - gamma(keV) < 4.43 x 10(-3) for Mrk 501, while expanding the scope of the tested EEP energy range out to the TeV-keV range for the first time. With the small time lag from the 0.2-0.8 TeV and > 0.8 TeV light curves of PKS 2155-304, a much more severe constraint on gamma differences of similar to 10(-6) can be achieved, although the energy difference is of the. order of similar to TeV. Furthermore, we can combine these limits on the energy dependence of gamma with the bound on the absolute gamma value gamma - 1 similar to 0.3% from light deflection measurements at the optical (eV) bands, and conclude that this absolute bound on gamma can be extended from optical to TeV energies.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Astronomy & Astrophysics
研究领域[WOS]: Astronomy & Astrophysics
关键词[WOS]: ACTIVE GALACTIC NUCLEI ; MARKARIAN 501 ; MILKY-WAY ; RADIO ; VARIABILITY ; PHOTONS ; OBJECTS ; FLARE
收录类别: SCI
项目资助者: National Basic Research Program ("973" Program) of China(2014CB845800 ; National Natural Science Foundation of China(11322328 ; Youth Innovation Promotion Association(2011231) ; Strategic Priority Research Program "The Emergence of Cosmological Structures" of the Chinese Academy of Sciences(XDB09000000) ; 2013CB834900) ; 11433009 ; 11543005)
语种: 英语
WOS记录号: WOS:000369605600002
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内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/16131
Appears in Collections:南极天文中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
2.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Jiangsu, Peoples R China
3.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China
4.Nanjing Univ, Purple Mt Observ, Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210008, Jiangsu, Peoples R China
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